PS Magazine - TB 43-PS-575

PS, The Preventative Maintenance Monthly

ISSUE 575

OCTOBER 2000
PS Magazine - TB 43-PS-575 - Page 9 of 34
PS 575
17
OCT 00
PS 575
16
OCT 00
echanics, removing a corroded torsion bar is no picnic—unless you normally
take a sledgehammer or cutting torch along on your summer outings!
Keep torsion bars from getting stuck in the first place by installing them the
right way. Here’s how:
1.
Clean the torsion bar surface, including the splines and anchor, with dry
cleaning solvent.
2.
Wipe off the splines, anchor
and the rest of the torsion bar
with a clean, dry rag.
3.
Apply a coat of corrosion
preventive compound, NSN
splined surface of the torsion bar
anchor, using brush, NSN 8020-
00-297-6657.
4.
Put a thin coat of dry film lube, NSN 9150-00-948-6912, on the outside
surface of the anchor just before you install it in the roadwheel housing.
Next time you have to remove a torsion bar, it’ll come out slick as a whistle.
Dear Half-Mast,
We have to change the belts on our MLRS second generators often.
Even brand-new belts don’t last very long.
Any idea why this is happening?
MSG J.R.
M88A1 Recovery Vehicle, Armored Vehicle Launched Bridge . . .
MLRS Carrier . . .
Dear Master Sergeant J.R.,
Friction is the likely culprit.
The belt passes over the second generator’s
pulleys at high speed. That builds up a lot of
friction between the belt and the grooves on
each of the pulleys.
Over time, the pulley grooves are sharpened
by the friction. Those sharp edges then cut into
the belt and ruin it. That’s why a new belt fares
no better.
The best quick fix is to file the tips of the
pulley grooves slightly until they are flat again.
Eventually, though, you’ll have to replace the
pulleys.
...cut
into
belt
Sharpened grooves on pulley.
..
Clean
torsion
bar, then
brush
corrosion
preventive
compound
on splines
i can tell
you how to keep
those belts on the
job
longer
.
i'll
take care
of that
torsion
bar!
yikes!
there's got
to be an
easier
way
!
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